Lock



- May 21, 1929.

E. N. JACOB! LOCK Filed Aug. 8, 1928 6 hath 5mm Mam;

- pas-sea May 21,- 1ea9'.

1 1,714,372 PAiusrvr, OF-FIIC' E1..I.',-

EDWARD a .rAcoBI, or MILWAUKEE, Wisconsin, ASSIGNOR are names Am: smar-TON'YCORZPORATION', or MILWAUKEE, wrsooivsm, A coarona'rron or DELAWARE.

" Loci;

' Application filed August s; 1928. Serial No.- 298,293.

This invention relates to certain new and useful improvements in lockstructuresand has as a generalobject the provision of an improved lockhaving a reduced number of 5 parts to generally simplify'the assemblyand reduce the manufacturing costs.

' Another object of thisinventwnresides in the provision of an improvedlock structure havinga locking bolt stamped from sheet Inctal'ratherthan machined to simplify lts manufacture and provide a strong unitaryarrangement.

Another'objectof this invention resides.

in the provision of an improved lock hav- :5 fi'ng a one piece casingand a locking bolt so arranged that its entire thickness IBSISlJS,shearingstresses inflicted thereon by at.- tempts to drive the cylinderthrough its mounting head. I Q Another object of this invention residesin the provision of an improved lock structure in which the locking boltis constructed and mountedto permit engagement of its spring therewithat its center whereby the maximum strength of the spring is obtained. Afurther object of this invention resides in the provision of an improvedlock'hav ing a one, piece mounting barrel provided with a steel frontto'prevent breakingof the barrel to facilitate its unauthorized removal.And a still further object of ,this inv'en-i tion resides in theprovision of an improved lock structure which may be readily removed andtaken apart without special tools and without injuring the structure inany man- 1 ner; e

VVith the above and other objects in view '-which will appearas thedescription pro- 40 ceeds, my invention resides in the novel consuchchanges in the precise, embodiment of the herein disclosed invention maybe made as come withinthe scope of the claims.

Inthe accompanying drawing, I have illustrated one complete example ofthe-physical embodiment of my invention constructed accordin to the bestmodel have so far devised ior'the practical application of vtheiprinciples thereof and in which:

' Figure-Lisa side elevational view,.with

parts broken away and insection,-of alo'ck embodying my invention, Y r Ij Figure 2 is anend elevational view of the lock assembly Figure-3is afragmentary view of the rear end oft-he lock-with the mounting head insection and the cylinder and locking bolt in side elevation,illustrating themanner of assembling the lock;

of Figure 1 and illustrating the elon ated Figure 4 is a fragmentary,,elevationalirregular shaped opening through which the locking bolt isinserted in assembling and. Figure 5 is a perspective View of the inherend of the lock cylinder, locking bolt and the washer member adapted tobe positioned between the locking bolt-and lock cylinder. 1

Referring now more particularly to the accompanying drawing, in whichlike numerals designate like'parts throughout the several views, 5represents a lock cylinder mounting head which is centrally'bored fromthe rear, as at 6, and has its outer end 7 ,provided with a smaller bore8 concentric with.

the bore 6. A lock 'cy1inder '9- is rotatable -in the bore 6 and has areduced outer-end portion 10 which is recei'vedin a protecting end cap11 rotatable in :the reduced bore 8, the cap 11 having an annular flange12 on its inner eripheral edge to abut a shoulder 13 forme at thejunction of the bores 6 and 8 to .prevent outward movement of the v lockcylinderi The lock cylinder is provided with a plurality of springpressed tumblers l which are normally-spring ur ed into lon 'tudinalslots 15 in the walls 0 the mounting head -bore to restrain the cylinderagainst rota I limit the outward movement of the bolt by an expansilespring 21 confined between two fee ' spaced guideparts 22 on the innerend of the lockmg .bo t

with oneend engagin a tit or enlargement 23 formed ion. the bol t and.its' other end engaged in a removable, cup

24'secu red in a recess 25 in the wall. of the bore 6 diametricallopposite-the recess-19'.

The inner-end o the cylinder has a'substantially V or segmental shapedextension I 26 from Oneend of which a'cam 27 projects to engage 'ashoulder '28. at the'inne'r end of one of the guide arts 22 so thatwhen. the

. cylinder is rotate in a .clockwise ;;di rection,

- shaped opening34 in the wallof the mount- .ing' head opposite theopening 19 and the looking at the front end of the locl f, the cam 27bears against the shoulder 28 "to"-1' etr act. the bolt against .its'spring 21, one guidepart working in the cut-away portion 29., of the;

' lock cylinder and theother working jonthe outer face of the V orsegmental shaped ex tension 26. To prevent the insertion of aninstrument through the key opening l7 to work the locking bolt againstits spring 21, a washer 30 is positioned between the cylinder andlocking bolt. The halves of the. washer 30 areon different planesso thatone half 31' engages the extension 26 and -the other half 32 engages'thecut-a'way'section 29 and closesthekey opening atits rear, "a: recess orcut-away portion 33 inthe washer' member permitting the projectiontherepastof the eccentric pin-27.

' In assembling the lock, the cylinder .is engaged in the mounting headbore from the rear, the washer 30 is then. inserted to engage the rearend .thereof and the locking bolt unit is passed through'an irregularspring 21 and itscap 24 arethen placedin position, in the mannerillustrated in Figure 3, the tit-35on'the bottom oft-he cup 24 nestingin the opening 34. In assembling or disassembling the lock, a'screwdriver or other 36 is employed in the manner illustr in Figure 3,disasscmblingbeing accomplished by prying the tit 35 of the cup 24: outof the opening 34, as will be readily apparent. The opening 34, as bestshown .in' Figure 4, has its two ends on difi'erent planes so as toaccommodate the irregular shapeof the-enlargedinner endofthe lock .bolt.

' whereby rotation of the cylinder actuates the locking bolt} 2. a.look,- a lock cylinder mounting A 1 i i 1,712,372-

head having a central bore, a rotatable lock.

cylinder' adaptedto be inserted in the i mounting head bore from one.end, means preventing movement of the cylinder beyond the other end'ofthe mounting head, a'-.locking. bolt m ounted adjacent the first-men'-tioned end of the mounting head andpre 4 venting movement of thecylinder outwardly V of the mounting head, means whereby rotation ofthe-cylinder actuates the locking bolt,

and means detachably maintaining the lock- King bolt. in position,

Ina look, a lock cylinder mounting head-having a central bore, a lockcylinder rotatable in the bore, a locking boltmounted adjacent one "endof the cylinder, means wherebyrotati'on of the cylinder moves thelocking bolt inone direction, means yieldably urging the locking bolt inthe other.

direction, and means readily detachably maintaining the locking boltassembled with the mounting head.

4-. In a lack, a lock'cylindermounting hea d having a central bore andatransverse' vslot communicating with the bore, a lock cylinderrotatable in the bore, alocking bolt slidably mounted in. the-transverseslot and preventing axial movement ofthelock cylinder, means yieldablyurging the i locking 'bolt to its operative position with -apartthereofextended beyond the periphery of the mounting head, andmeans" wherebyv rotation of the lock cylinder retracts the locking boltwithin the mounting head.

5. In a' lock,- a lock cylinder mounting "head having a central bore anda transverse slot communicating with the bore, a lock cylinder rotatablein the bore, a locking bolt slidably mounted in the-transverse slot andadapted to be inserted therein from one end, means limiting outwardmovement. of the locking bolt, means'readily detachably.

maintaining the locking bolt assembled with the mounting head, and meanswherebyrotation of the lock'cylinder moves the locking -bolt.-

' 6. In a lock, a lock cylinder mounting head having a central bore anda transverse slot communicating with the bore, a lock cylinder rotatablein the bore, a locking bolt slidably mounted in the transverse slot andinserted therein from one end, means limiting' outward movement of thelockin bolt,

means yieldably urging the locking bo tout- Wardly of the mounting head,means readily detachably retaining the locking. bolt and its urgmg-meansassembled with the mountingheadand means whereby rotation of theIOCkCYllXldGIflIIlOVBS the locking holt.

7. In a l ock,. a lock cylinder mounting head-having a'central bore witha shoulder adjacent one end thereof, a lock cylinder rotatable in"-thebore and abutting the shoulder at one end to. limit axial movement.

of the cylinder in one direction, a locking the lock cylinder to preventaxial movementof the lock cylinderin the other direction, and meansengaging the opposite sidesrot thelocking bolt whereby a maximum forceis provided to resist shearing stresses in-' flicted upon the lockingbolt during attempts to drive the lock cylinder through the mountinghead.

8. In a look, a lock cylinder mounting head having a central bore and atransverse slot communicating with the bore, a lock cylinder rotatablein the bore, a locking bolt mounted in the transverse'slot with itssides in engagement therewith, means limiting outward movement ofthelocking bolt in one direction, means engaging the locking bolt at acentralpoint and yieldably urging the same outwardly of themountinghead, and means whereby rotation of the lock cylinder moves thelockingboltagainst the yieldable action of its urging means.

,9. In a'lock, a lock cylinder mounting .head having a central bore anda slot traversing the bore, a lock cylinder rotatable in the bore, alocking bolt adapted to be mountedin the slot to prevent axial movementof the cylinder, means limiting outward movement of the locking boltspring means engaging the locking bolt an normally yieldably urging thesame outwardly to its operative position engaging said limiting means, amember engageable with the spring means and the slot to'prevent theaccidental detachmentof the spring means and locking bolt, andmeanswhereby rotation of the lock cylinder moves the-locking bolt.

10. In a lock of the character described, a mounting head having a slottraversing the bore, a locking bolt movable in the slot and adapted tobe inserted therein from one end, means limiting movement of theboltbeyond the slot other end, spring means normally urging the bolt toits position engaging the limiting means, and means engaging the end ofthe slot through which the bolt is inserted to prevent outward movementof the spring means and the bolt.

11. In a lock of the character described, a mounting head having acentral bore and a slot traversing the bore, a lock cylinder rotatablein the bore, a locking bolt slidably mounted in the slot and adapted tobe inserted therein from one end, means limiting the movement of thelocking bolt beyond the other end of the slot, an expansile springongageable with the locking bolt and normally urging the same outwardlyof the slot other end, a retaining cup engageable with the other end ofthe spring'and readily detachably positioned to retain the spring andbolt in operative position, and means whereby.

rotation of the lock' cylinder moves the.loc king bolt against itsspring.

locking bolt.

bore and having'a key slot extending there- 7 through, ,a locking boltoperatively associated with the lock cylinder inner end, and I meansinterposed betweenthe lock cylinderand l ocking bolt to prevent theinsertion of an instrument through the.key slot to actuate the lockingbolt. j

13. In' a lock, amounting head having a central bore, a lock cylinderrotatable in the bore'and having a key slot extending therethrough, 'alocking bolt operativcly associated with'the inner end of the lockcylinde'r, and a washer'member'interposed.between the end of the lockcylinder and locking bolt to prevent the insertion of an instrumentthrough the key slot to actuate the locking bolt.

1.4. In a lock of the character described, a cylinder mounting head, alock cylinder ro-' tatably mounted in the head, an approximately Yshaped member transversely slidable in the mounting head adjacent theinner end of the cylinder, the leg of the 'Y forming alocking boltadapted to be projected beyond the periphery of the mounting head,-

guide ways in the mounting head in which the arms of the 'Y are guided,and means whereby rotation of the cylinder aetuates the 15. In a lockcylinder mounting head, a lock cylinder rotat-ably mounted in the head,an approximately Y shaped member transversely slidable in the mountinghead adjacent the inner of the character described, a a

end of the cylinder, the leg of the Y forming alocking bolt adapted tobe'projected beyond the periphery of the mounting head, guide ways in:the mountin head'in which the arms of the Y are gui ed, an'expansilespring confined between the arms of the Y shaped member and compressedbetween the transverseportion of said member "and the mounting head tonormally, yieldably urge the locking bolt outwardly otthe mounting head,and means whereby rotation of the cylinder retracts the locking bolt.

16. In a lock, a lock cylinder mounting head having a-central bore and aslot traversing the bore, a lock cylinder rotatable in the boreandhaving a cam extended therefrom, a locking bolt stamped from sheetmetal. mounted in the transverse slot and adapted to be inserted thereinfrom one end,

means yieldably urging the locking bolt into engagement with the lockcylinder carried cam, and means readily detachably securing the yieldingmeans in position whereby the locking bolt may be readily removed topermit removal of the lock cylinder from the mounting head, rotation ofthe lock cylinder moving the locking bolt by means of the cam.

17. In a. lock, a lock cylinder mounting head havin a central bore and aslot travg ersing the bore, a shoulder partially closing thecentralbore, a lock cylinder rotatable in the bore and adapted to be insertedtherein from one end, the mounting head shoulder preventing outwardmovement of the lock cylinder, a locking bolt mounted in the slotinwardly of the adjacent end of the lock cylinder to prevent inwardmovement of the lock cylinder, the locking bolt being inserted in theslot from one end thereof, cooperating means carried by thelock cylinderand the locking bolt and normally in engagement whereby rotation of thelock cylinder moves the locking bolt, and means yieldably and readilydetaehably in engagement with the lock cylinder carried part whereby theentire mechanism may be disassembled by releasing thedetachable means topermit the removal of the locking bolt from the slot and the lockcylinder from the central bore.

'18. In a cylinder look, a supporting memher, a key controlled cylindermovable in the supporting member, a locking bolt stamped from sheetmetal and operable by the cyl- I inder and mounted within the supportingmember in the path of removal of the cylinder, and means whereby thelocking bolt holds the cylinder in proper assembled position with thesupporting member 19. In a cylinder lock, a mounting meniber, a cylindermovable in the mounting member, a stamped metal locking bolt remov-EDWARD N. JAcoBL

